> For the complete documentation index, see [llms.txt](https://guides.clickatell.com/release-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.clickatell.com/release-notes/release-notes-archive/2022-release-notes/q4-2022/channel-updates.md).

# Channel Updates

* [SMS Long Number Management & WhatsApp pre-approved templates.](/release-notes/release-notes-archive/2021-release-notes/q4-2021/channel-updates/sms.md)